Equity-Based Compensation - Summary of RSU and PSU Activity under Plan Additional Information (Details) $ in Thousands  | 
12 Months Ended | 
|---|---|
| 
 Sep. 30, 2023  
USD ($) 
 | |
| Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] | |
| Weighted average period (years) that expense is expected to be recognized | 2 years 4 months 24 days | 
| Restricted Stock Units And Performance Units | |
| Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] | |
| Unamortized value of unvested RSUs/PSUs | $ 18,527 | 
| Weighted average period (years) that expense is expected to be recognized | 2 years 8 months 12 days | 
| X | ||||||||||
- Definition Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
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| X | ||||||||||
- Definition Amount of cost to be recognized for nonvested award under share-based payment arrangement. Excludes share and unit options. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef 
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| X | ||||||||||
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
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| X | ||||||||||
- Details 
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